Robotics have long since ceased to be the domain of futurists and science fiction writers. Today robots are a reality, and in addition to the useful functions that they perform in science and production, robots also have an entertainment function. Today, there are numerous models of toy robots that serve to entertain the owners. They are quite expensive, so if you dream of getting a robot toy, but don't have the funds for it, try making such a toy yourself. In this article, we will look at the creation of a mechanical robotic arm from scrap materials.
It is necessary
Use CD packaging, thin synthetic cord, corrugated plastic tubing (available from home improvement stores), duct tape, and glue to make your mechanical arm
Instructions
Step 1
Take a pencil and trace your own palm on a piece of paper to have an anatomically correct "model" of a human hand at hand. Mark with dots the places in the figure where the robot's hinges will be located - these are the folds of each finger.
Step 2
Make your fingers from a purchased small diameter plastic tube. Cut five tubes from it with a cutter, the length of which corresponds to the length from the wrist to the tip of the finger, since the tubes will also play the role of the palm, passing into the fingers. Measure distances by drawing your own hand.
Where in the picture you marked the places for the folds, you will need to make triangular cuts on the tubes so that they can also bend.
Step 3
Take synthetic lace. Thread a string through each finger and secure with tape or duct tape. The cords are needed for subsequent finger manipulation.
Cut a side narrow piece of plastic from the CD box and glue it across to the place where the “palm” should be, under the hinges, after placing your fingers in the correct order. Additionally wrap the palm with duct tape. This will secure the structure.
Step 4
Separately attach to the "palm" a thumb made from a separate tube and also notched at the folds. Place it in the palm of your hand anatomically and screw it on with duct tape.
Step 5
Using the leftover plastic from the disc case, cut out a trapezoidal piece that will become your wrist. Use a plastic wrist and glue to connect the wrist to a long tube secured from the inside with a stiff pin. For a more natural hand, complement it with foam inserts in the holes on the fingers and in the palm.
Step 6
By pulling on the cords protruding from the long arm tube, you can control the movement of your fingers. Your mechanical arm has been created.
